Trouble Ticket Help Requests for DTC P0221
|2003 Cadillac CTS 3.2L Surge, MIL Lamp on, Extremely High Idle VIN: 1G6DM57N13
P0221: Throttle Position Sensor 1-2 Range Correlation. Vehicle was brought in with an extremely high idle that was surging at times (2000-3000 RPM) when in park. Cleared the codes from both the engine and trans modules. After about ten maybe 15 minutes the idle settled down to a normal level and was no longer surg...
|March 19, 2015|